Re: Agonizing situation. It's like bitcoins have their own will. Stupid problems.
You could move out of Sweden? Correct me if I'm wrong here, but I'm getting the impression that you're not fond of the country. 
Anyways, taxes will probably be a problem regardless of country. And with the volume of BTC you have... well, most online exchanges have limits on transactions to cap the amount you can sell at a time. You'd have to do quite a few micro-transactions, I imagine. Cash would be the easiest way to avoid a tax issue, but the volume is an issue there as well (as you said yourself).
You don't want to just hold on to the Bitcoins? I can't imagine too many options you have to choose from. Except maybe opening a foreign bank account?
Anyways, taxes will probably be a problem regardless of country. And with the volume of BTC you have... well, most online exchanges have limits on transactions to cap the amount you can sell at a time. You'd have to do quite a few micro-transactions, I imagine. Cash would be the easiest way to avoid a tax issue, but the volume is an issue there as well (as you said yourself).
You don't want to just hold on to the Bitcoins? I can't imagine too many options you have to choose from. Except maybe opening a foreign bank account?